CVE-2018-14558
Tenda AC7, AC9, and AC10 Routers Command Injection Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 3 May 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
An issue was discovered on Tenda AC7 devices with firmware through V15.03.06.44_CN(AC7), AC9 devices with firmware through V15.03.05.19(6318)_CN(AC9), and AC10 devices with firmware through V15.03.06.23_CN(AC10). A command Injection vulnerability allows attackers to execute arbitrary OS commands via a crafted goform/setUsbUnload request. This occurs because the "formsetUsbUnload" function executes a dosystemCmd function with untrusted input.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 8.74% probability · 95th percentile
- CISA KEV
- Listed 3 November 2021 · due 3 May 2022
- Weakness
- CWE-78
- Affected
- tenda/ac7 firmware · tenda/ac9 firmware · tenda/ac10 firmware
- Source
- cve@mitre.org
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2018-14558
References
- https://github.com/zsjevilhex/iot/blob/master/route/tenda/tenda-01/Tenda.mdBroken Link, Exploit, Third Party Advisory
- https://github.com/zsjevilhex/iot/blob/master/route/tenda/tenda-01/Tenda.mdBroken Link, Exploit, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-14558US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.